CN210005346U

CN210005346U - geosynthetic material gripping and stretching test fixture

Info

Publication number: CN210005346U
Application number: CN201920726011.6U
Authority: CN
Inventors: 王疆; 仵建国
Original assignee: Wenzhou Jigao Testing Instrument Co Ltd
Current assignee: Wenzhou Jigao Testing Instrument Co Ltd
Priority date: 2019-05-20
Filing date: 2019-05-20
Publication date: 2020-01-31
Anticipated expiration: 2029-05-20

Abstract

The utility model discloses an kinds of geosynthetic materials grip tensile test anchor clamps relates to building material testing arrangement field kinds of geosynthetic materials grip tensile test anchor clamps, including the reel core, set up bar strip jack on the reel core, bar strip jack position department sets up the geotechnological cloth fixer, reel core side sets up the casing, set up jack catch controlling means on the casing, set up the jack catch on the jack catch controlling means, the jack catch is two, two the jack catch suits with the reel core, set up the breach on the casing, the breach suits with the jack catch.

Description

geosynthetic material gripping and stretching test fixture

Technical Field

The utility model relates to a building material testing arrangement field specifically is geosynthetic materials grip tensile test anchor clamps.

Background

In a traditional geotextile strip tensile test, for example, a YT010-3000 geotextile holding tensile testing machine adopts a clamp as shown in figure 1, the clamp is simply composed of two clamping plates, the two clamping plates clamp the end part of geotextile and then tightly press and fix the geotextile through bolts, the clamp has the defects that 1, in the test operation, the traditional clamp cannot ensure firm clamping and does not damage a sample, the phenomenon of stress concentration is easy to occur at the clamping position, the tearing position is at the clamping and fixing position, the test result is invalid, 2, the other problems of the traditional clamp are that the clamp completely depends on manual tightening of the bolts to tightly press and fix, different strength of different testers can cause the difference of reinforcement degrees, and meanwhile, the clamp is often damaged or even cannot be used due to the fact that a knob is too hard to be used for molding, the clamp is too hard to be used for a long time, and the repair rate of the traditional clamp is extremely high.

In order to solve the problems, in the prior art, patent ZL201720693451.7 discloses a stretching clamp for geotextile strips, which comprises a switch box body, wherein the switch box body comprises a left box body and a right box body, strip-shaped holes are formed in the lower parts of the left box body or the right box body, the lower parts of the left box body and the right box body are hinged to through hinge shafts, left switch handles and right switch handles are respectively arranged on the upper parts of the left box body and the right box body, when the left switch handles and the right switch handles are closed, left stretching fixing holes and right stretching fixing holes can be overlapped with left closing screw holes and right closing screw holes, a reel core is arranged in the switch box body, strip-shaped strip insertion holes are formed in the reel core along the direction, bolts at the two ends of the reel core can be respectively inserted into core holes at the two ends of the switch box body, geotextile retainers at the two ends of the geotextile strips to be tested are respectively fixed by geotextile retainers at the two ends of the upper switch box body and the lower switch box body, the two geotextile retainers are respectively inserted into strip insertion holes of the upper switch box body and the upper switch body and the lower switch box body, the upper switch box body and the upper box body and the lower switch box body are respectively, the upper box body and the lower switch box body are fastened by the geotextile strip insertion holes, the left box body, the upper box body.

When the device is used, in the aspect of , the switch brake body is fixed through the bolt, the disassembly and the assembly are time-consuming and labor-consuming, the measurement efficiency is influenced, in addition, in the aspect of , the reel core is fixed through the bolt and the rotation stopping inserting strip, the strength and the rigidity are poor, the device is easy to shake, and the error of experimental data is increased.

SUMMERY OF THE UTILITY MODEL

For solving prior art's not enough, the utility model provides an kinds of geosynthetic materials grip tensile test anchor clamps, it not only can be quick loosen and fasten the reel core, has strengthened the fastness that the reel core is fixed moreover, reduces experimental error.

The utility model discloses a realize above-mentioned purpose, realize through following technical scheme:

kinds of geosynthetic material grip tensile test anchor clamps, including the reel core, set up the strip bar jack on the reel core, strip bar jack position department sets up the geotechnological cloth fixer, reel core side sets up the casing, set up jack catch controlling means on the casing, set up the jack catch on the jack catch controlling means, the jack catch is two, two the jack catch suits with the reel core, set up the breach on the casing, the breach suits with the jack catch.

Jaw controlling means includes the residual gear, the residual gear is located the casing, the residual gear is two, two the residual gear all rotates with the casing to be connected, the residual gear all with jack catch fixed connection, two set up the rack between the residual gear, set up the through-hole on the casing, the rack end is passed the through-hole and is located the casing outside, the rack is located the outer end of casing and sets up power device.

The power device is a cylinder.

Set up constant head tank on the reel core, set up the second constant head tank on the jack catch, reel core side sets up the locating plate, set up the locating piece on the locating plate, the locating piece is a plurality of, and is a plurality of the locating piece suits with the position of constant head tank, second constant head tank.

Contrast prior art, the beneficial effects of the utility model are that:

1. on the basis of the existing geotextile strip stretching clamp, the clamping jaw is used for quickly loosening and fastening the winding drum core, so that the measurement efficiency is improved, the firmness of the geotextile material in the stretching test process is enhanced, the shaking is reduced, and the accuracy of experimental data is improved.

2. The jaw control device adopts the mutual matching of the rack and the two gears to control the opening and clamping of the jaws, has simple structure, light weight and convenient control, and is suitable for clamping the winding drum core.

3. The cylinder is adopted to drive the rack to stretch and retract, so that the opening and closing of the clamping jaws are controlled, the cylinder is low in cost and flexible to control, the cylinder is adaptive to the light weight characteristic of the rack, and the movement of the rack is convenient to control.

4. positioning grooves, the second positioning grooves and positioning blocks on the positioning plate are matched, so that the stability of the reel core fixation is further improved .

Drawings

FIG. 1 is a schematic view of a conventional clamp construction;

FIG. 2 is a schematic structural view of the front view of the present invention;

FIG. 3 is a schematic structural view of the positioning plate of the present invention without a front view;

FIG. 4 is a schematic left side view of the core of the reel of the present invention;

fig. 5 is a schematic structural view of a perspective view of the positioning plate of the present invention.

The drawing shows the reference numbers of 1, a reel core, 2, strip-shaped strip jacks, 3, a geotextile fixer, 4, a shell, 5, a clamping jaw, 6, a notch, 7, a residual gear, 8, a rack, 9, a through hole, 10, a power device, 11, th positioning grooves, 12, second positioning grooves, 13, positioning plates, 14, positioning blocks, 15, a traditional clamp and 16, geotextile strips.

Detailed Description

The present invention is further illustrated at in conjunction with the accompanying drawings and the detailed description, it is to be understood that these examples are provided solely for purposes of illustration and are not intended to limit the scope of the invention.

The utility model discloses the standard part that uses in all can purchase from the market, and dysmorphism piece all can be customized according to the description with the record of drawing of description, and the concrete connection mode of each part all adopts conventional means such as ripe bolt, rivet, welding, pasting among the prior art, and simultaneously, in order to express connection relation and theory of operation between each component clearly, the description drawing has carried out the arrangement and has drawn in order to adopt the mode of the sketch of mechanism motion, no longer elaboration here.

A clamp for holding and stretching a test of geosynthetic material, comprising a reel core 1, wherein a strip jack 2 is arranged on the reel core 1, a geotextile fixer 3 is arranged at the position of the strip jack 2, as shown in figure 2, the reel core, the strip jack and the geotextile fixer are all existing components, the use principle and the method for fixing the geosynthetic material are described in detail in ZL201720693451.7, which is not repeated in this application document, a shell 4 is arranged at the side of the reel core 1 , a jaw control device is arranged on the shell 4, a jaw 5 is arranged on the jaw control device, as shown in figures 2 and 3, the shape of the jaw is adapted to the reel core, the outer wall of the reel core can be clamped by the circular arc part of the jaw, the jaw core is kept fixed, after the jaw core is clamped, the jaw control device still controls the jaw to exert force in the direction of the reel core, thereby ensuring the firmness of the reel core fixation, as shown in figure 4, the geotextile fixer is arranged at two ends of the reel core, the jaw 5 is prevented from interfering with the clamp core, the jaw 5 is arranged in the middle of the existing clamp, the clamp can be used for improving the efficiency of the clamp, and the clamp for improving the clamp for the clamp, and improving the efficiency of the clamp for the existing clamp, and improving the clamp for the existing geotextile, and improving the clamp for the clamp.

Jaw controlling means adopts current tensioning block mechanism, as preferred the utility model discloses an embodiments, jaw controlling means includes the residual gear 7, residual gear 7 is located casing 4, residual gear 7 is two, two residual gear 7 all rotates with casing 4 to be connected, residual gear 7 all with jack catch 5 fixed connection, two set up rack 8 between the residual gear 7, set up through-hole 9 on the casing 4, rack 8 end is passed through-hole 9 and is located casing 4 outside, rack 8 is located casing 4 outside end and sets up power device 10, jaw controlling means adopts rack and two gears to mutually support, and control opening and pressing from both sides of jack catch, simple structure, weight is lighter, and the control of being convenient for is applicable to pressing from both sides tightly the reel core.

The power device can adopt ball screw mechanism, hydraulic cylinder mechanism, as preferred, power device 10 is the cylinder, adopts the cylinder to drive the flexible of rack, and then the opening and the closure of control jack catch, and the cylinder is with low costs, and control is nimble, suits with the light weight characteristic of rack, the removal of the control rack of being convenient for the embodiments of the utility model, the cylinder adopts the cylinder of the cr SC50 x 150 model can.

Preferably, the reel core 1 is provided with a th positioning groove 11, the claw 5 is provided with a second positioning groove 12, the reel core side is provided with a positioning plate 13, the positioning plate 13 is provided with a plurality of positioning blocks 14, the plurality of positioning blocks 14 are matched with the th positioning groove 11 and the second positioning groove 12, the th positioning groove, the second positioning groove and the positioning blocks on the positioning plate are matched, and the stability of reel core fixation is further improved .

The using method comprises the following steps:

the utility model discloses when using, the both ends of the geotechnological cloth strip that awaits measuring are fixed respectively to the geotechnological cloth fixer on two reel cores, then rotatory reel core, make the tip of geotechnological cloth strip rotatory rings more than half on the reel core at least, rethread jack catch controlling means control jack catch is fixed the reel core, accomplish the centre gripping and set up the back, open the stretcher, accomplish tensile test and record data, after the test is accomplished, open the jack catch, take off the sample, continue to carry out the tensile test of geotechnological materials down.

Claims

The holding and stretching test fixture for geosynthetics comprises a winding drum core (1), wherein strip-shaped strip jacks (2) are formed in the winding drum core (1), and geotextile holders (3) are arranged at the positions of the strip-shaped strip jacks (2), and is characterized in that a shell (4) is arranged on the side of the winding drum core (1), a jaw control device is arranged on the shell (4), two jaws (5) are arranged on the jaw control device, the two jaws (5) are matched with the winding drum core (1), a notch (6) is formed in the shell (4), and the notch (6) is matched with the jaws (5).
2. The geosynthetic material gripping and stretching test fixture of claim 1, wherein the jaw control device comprises two stub gears (7), the stub gears (7) are located in the casing (4), the two stub gears (7) are rotatably connected with the casing (4), the stub gears (7) are fixedly connected with the jaws (5), a rack (8) is arranged between the two stub gears (7), a through hole (9) is formed in the casing (4), the end of the rack (8) penetrates through the through hole (9) and is located outside the casing (4), and a power device (10) is arranged at the end of the rack (8) which is located outside the casing (4).
3. The geosynthetic grip tensile test fixture of claim 2, wherein the power device (10) is an air cylinder.
4. The gripping and stretching test fixture for geosynthetics according to any of claims 1 to 3 and , wherein a th positioning groove (11) is formed in the reel core (1), a second positioning groove (12) is formed in the claw (5), a positioning plate (13) is arranged on the side of the reel core (1), a plurality of positioning blocks (14) are arranged on the positioning plate (13), and the plurality of positioning blocks (14) are adapted to the th positioning groove (11) and the second positioning groove (12).